Circuit-continuing device.



H. A. DOUGLAS.v

CIRCUIT CONTINUING DEVICE. APPLICATION FILED JuLY 23. 1917.

1 ,-299,147. Patented Apr. 1,1919.. j f4 '6222 27j `25 V- maintain theassembly of the jacket body 35 relative longitudinal movement of theseparts Y HARRY A DOUGLAS, 0F BRONSON, MICHIGAN, ASSIGOB T0 DOUGLAS & RUDDMFG'. C0..

F BIBONSON, MICHIGAN, A CORPO-RATION 0F MICHIGAN. l

To all whom t may concern:

Be it known that I, HARRr A. DoUcLAc,

My invention relates to circuit continuing devices and has for itsgeneral objects the provision of an improved formation thereof wherebytheir component parts may readiy and quicklybe assembled by simple and ecient means and may readily be disassembled.

The .invention finds a most useful embodi-` inent in the formation ofconnecting plugs.

' Thedevice of my invention is inclusive of a contact carrier or coreand a jacket therefor with which such core is preferably separablyassembled by means of interengaging coupling formations provided uponthe jacket and core. The jacket is preferably inclusive of a bodyportion and -a cap,'the

body portion having coupling engagement with the core while the capfunctions to portion andthe core. Current conducting means desirablyextends into-the core later- -ally thereof, but to which arrangement theengaging formations provide invention is not to' be limited, and when soof the jacket in the process of their assembly.

By means of the interengaging couplingA formations upon the jacket bodyand the core is prevented; relative rotary movement of the cap and core-is prevented biy the inter.-

d t ereon; and relative'frotary movement of the cap and body portions ofthe jacket is prevented b interengaging formations provided upon t @SePMtS- My invention in all ofits aspects will be fully explained by`reference lto .the accom-1 drawing 'showing the-preferred ,em-

gm g t ent thereof andin which' Figure 1 r illustratesthecircuitsextendin'g plug of my 4'o invention in longitudinal sectionthere being .also Aillustrated afci'rciiit coup er the 1 shell o fwhichatlie plug is inserted.;I Fig. is @,f'jaj view on line2-2 ofFig'.1; F i `31s a f' view-o`i'i line 3--33of Fi 1-11; Fig.l 4 i ustratescomponent arts of e circuit extending plug of my invention in separatedrelation;

y Specification of Letters Patent. v appucauon 'mea my as, 1917. serialno. 182,196.

ement in Circuit-Continu .tion is inclusive of a met cmcuir-coirriiwmennvicn,

recentemente. i, isis.

llil-ig. 5 is a view taken on line 5 5 of Fig. f

4F, anld Fig. 6 is a view taken on line 6-6 of Like parts are indicatedby similar characters of reference throughout the dii-ferent figures.

The circuit extending plug of my invention may be employed inconjunction with any suitable device whereby the plug is instrumental inconnecting a--translating device with a circuit that is to supply thetranslating device with current. Such a device isv shown-'in Fig. 1 andpartially in'Fig. 3, the device shown being inclusive of a cylindricalmetallic current conducting shell 1 which has bayonet slots 2 at one endfor receiving the metallic bayonet pins 3 that roljectfrom the metallicsheath 4: provided about the base'of the lamp 5 and adapted forelectrical contact with the shell V1. A'llhis sheath constitutes oneterminal of the lamp as the structure illustrated is` a single poleconnector. VThis 4lamp base also carries a centrally disposed contact 6Awhich is insu-,

ing the engagement ofthe contact 9 with thev Acontact 6. The shell 1 isgrounded or otherwise'connected with one terminal of a source ofcurrent. The contacts-9. and 10 are connectedwith the other terminal ofthe source of current by a circuit extending plug of my invention. j v

The circuit extending lug of the inven- Vllic'jacket that has acylindrical metallic. body ortion -11 and a ofl this (jacket and the.metallic shell 1 are provide with interengaging coupling forma- Itionsthatare'lreferably in the nature of ugs 13 upon the jacket body with.a'contact carrying` cylindrical core 15 l this'ass'embly being deslrablyeffected by interengaging' .couphn formations provided 'upo'n thec'oreand jac et bod l and which arel I Apreferably a bayonet pin 1vvcarriedby the core and a bayonet channel 17 in the acket body. Thecontact carrier 15 and the Jacket 95 -circular metallic cap portion 12having 4a cylindrical skirt 121.. The body portion 11. v

Aeo

prising cap and body'portions, said body and carrier having.interengaging bayonet pin and channel formations permitting said bodyandcarrier to be slid into engagement by their relative longitudinalmovement-and preventing their relative longitudinal movementwhen theyare relatively turned after being slid into engagement, the cap andbody. having interengaging formations permitting their relativelongitudinal movement and preventing their relative turning movement;and means for fastening the cap and carrier together to prevent theirrelative turning movement to prevent the body and carrier from turning`relatively and to. prevent relative longitudinal" movement of thevcarrier and cap to hold the cap and body in assembly. v

p 2. A circuit continuing device including a contact carrier; a jacketfor the carrier comprisingbody and cap portions, said bodyand carrierhaving interengaging formations permitting their relative turningmovement and preventing their relative longitudinal movement, the capand bodyhaving interengaging .formations permitting their relativelongitudinal movement and preventing their relative turning movement;and

means for fastening the cap and carrier together to prevent theirrelative turning movement to prevent the body and carrier from turningrelatively and to prevent relative longitudinal movement o and 'cap tohold the cap and body in assembly.

AA circuit continuing device includinga l contact carrier; a jacket forthe carrier comprising cap and body portions, said body and carrierhaving interengaging` bayonet pin and channel formations permitting saidbody and carrier to be slid into engagement by their relativelongitudinal .movement and preventing their relative longitudinalmovement when they are. relative yp. turned after being slid intoengagement, the cap and body. having interengaging formations perturningrelatively. 4. A circuit continuing device including a contact carrier;a jacket foi; the carrier com mitting their relative longitudinalmovement and preventing their relative turning movement; and means forpreventing relative turning l movement between the cap and' carrier toprevent the body and carrier from 'ing movement, these intere Y tionspreventing relative longitudinal move prising body and cap portions,said' body and carrier having interengaging formations permitting theirrelative turning movement and preventing their relative longitudinalmovement, the cap and body having interengaging formationsi permittingtheir relative longitudinal movement and preventing their relativeturning movement;

and means 4for preventing relative turning movement between-the ca andcarrier. to prevent the body and carrier from turning relatively.

5. A circuit continuing device including a contact carrier; a jacket forthe carrier comprising body and cap portions, said body and "carrierhaving .interengaging formations which, in one adjustment, .permit theirformations permitting their from turning relatively and to preventrelative longitudinal movement of the carrier and cap the carrierv tohold the capv and -body in assembly.

6. A circuit continuing deviceincluding a contact carrier; a jacket forthe carrier comprising body and lcap portions, said body and carrierhaving interengaging formations which, in one adjustment, permit theirvrelative longitudinal movement and, in another adjustment, permit theirrelative turn aging formament of said body and carrier when they arerelatively turned, the cap and body having interengaging formationspermitting their relative lon tudinal movement 'and preventing their reative turning movement;

and means for preventing relative movement between the ca and carrier toprevent Athe body" and carrier freniv 105` relatively.

In Witness whereof, I my name `this 19th it A. UG

hereunto subscribe day of July -A D., 117.

